葵花油甲酯混合燃料使用在直噴式柴油引擎之研究

The Study on Using Sunflower Oil Methyl Ester (SOME)Blended Fuel in a DI Diesel Engine

王錦郎(Chin-Lang Wang)

指導教授 ： 林百福

國立臺北科技大學/機電學院/車輛工程系所/碩士(2007年)

摘要

葵花油甲酯生質柴油的含油率和熱質等，均較大豆油和油菜兩種甲酯生質柴油高，因此，含油率高可降低生產成本，又其熱值高能減低燃料消耗率，是一種極為值得推廣的生質柴油。由於一般生質燃料中含有可溶性有機物和皂化物等物質的關係，對長期使用在柴油引擎中將會造成引擎機件、潤滑和燃料系統等的損壞，不宜將純生質柴油直接使用在引擎上。故本研究將葵花油甲酯生質柴油混合在石化高級柴油中使用，經引擎性能實驗結果顯示，在引擎性能不受影響的情形下，混合添加比例20％SOME20和50%的SOME50的葵花油甲酯生質柴油混合燃料比純葵花甲酯生質柴油，在燃料消耗率及NOx排放濃度上，分別減低7.92%、8.12%和4.12%、4.23%，但在Smoke及HC排放濃度上，也分別增加89.52%、16.75%和37.75%、9.58%，由此可知，添加葵花油甲酯生質柴油的混合比例愈高，則燃料耗油率及NOx排放濃度也愈增高，反之，Smoke及HC排放濃度則愈減少。

關鍵字

葵花油甲酯混合燃料 ； 直噴式柴油引擎 ； 引擎性能 ； 油耗及廢氣排放濃度

並列摘要

The oil-bearing rate and heat value for rapeseed oil methyl ester are higher than soybean oil methyl ester and rapeseed methyl ester. Biodiesel that has high oil-bearing rate can cost down as well as high heat value can decrease BSFC. Therefore, Sunflower oil methyl ester is a very worthy of being popularized biodiesel. But for a long term used at diesel engine, engine parts, lubrication and fuel system may cause destruction due to soluable orgnic friction and accumulation of soaps included in biodiesel. Therefore, to use pure biodiesel on diesel engine directly is not proper. So sunflower oil methyl ester used in this study is blended with fossil premium diesel. After engine performance experiment, the experimental results demonstrated that BSFC and the concentration of NOx for 20% sunflower methyl ester blended with premium diesel (SOME20) and 50% sunflower methyl ester blended with premium diesel (SOME50) as compared with pure sunflower oil methyl ester are decreased 7.92%, 8.12% and 4.12%, 4.23%, respectively. But the concentration of Smoke and HC emission is increased 89.52%, 16.75% and 37.75%, 9.58%, respectively. Therefore, the higher proportion of sunflower oil methyl ester blended fuel is used, the more BSFC and the concentration of NOx emission are increased. On the other hand, the more concentrations of Smoke and HC emission are decreased.

並列關鍵字

Sunflower Oil Methyl Ester Blended Fuel ； DI Diesel Engine ； Engine Performance ； Fuel Consumption ； Concentration of Exhaust Gas Emission

參考文獻

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